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abstract methods and classes, need help and guidance very bad.

I am trying to complete this task and I am to a certain point I need some guidance.
my first task is as follows..........

task: Develop an abstract class called Recipe with the following elements:
 Instance Data: number of servings (an integer)
 Constructor method which accepts number of servings as a parameter, and assigns it to the instance variable.
 An abstract method named setIngredients, which accepts a String array as a parameter.

if anyone sees something I can improve or that would create an error. I am looking for help and criticism on how I can do this better or fix it.
and my code:

my next task is as follows.....
second task: Develop another class called CookieRecipe which extends Recipe. Include the following:
 Instance Data: cookTime (a String); cookTemperature(an integer); ingredientList [] (a String array)
 A Constructor which receives number of servings as a parameter, and then passes it to the constructor of the parent class using super.
 setIngredients method which receives a String array representing a list of ingredients.****NEED HELP WITH THIS
 Two other setters  for cookTime and cookTemperature
 A toString method to print a description of the object, including the ingredient list, the cookTime and the cookTemperature.*****ALSO NEED HELP WITH THIS

Last task is as follows.... I need a lot of help on this one.......
TASK: Create the Driver class, named RecipeDriver, consisting of a main method which does the following:
 Create a String array of the ingredients, for example: "sugar", "milk", "raisins", etc. Each ingredient is an element of the array.
 Instantiate a CookieRecipe object
 Call the setIngredients method, passing the array of ingredients.
 Call the setCookTime and setTemperature methods, passing as arguments the time and temperature from your recipe, respectively.
 Print the instantiated object (using your toString method description)